Camera



E. P. CLARK May --zo -1'92-4.

CAMERA Filed Nov. 23. 1920 'I I Il I a Illillll Il!!! Patented May 2.0, 1924.. l I

' UNITED STATES PATENT oFFlcE.

EARL I. CLARK, oI` IowAicIrY, IowA, AssIGNoR. or oNE-IIALF To BRUNO A xnArrT,

0F SAN FRANCISCO, CALIFORNIA CAMERA.

Application lcd November 23, 1920. Serial No. 425,975.

To all whom it may concern Be it known that I, EARL/ P. CLARK, a citizen of lthe United States, residing at Iowa City, in the State of lIowa, have invented a new and usefulv Camera, of which the following is a specification.

This invention relates to cameras of vthe roll-film type, and has for its special object to provide such a camera with means operable by daylight whereby the exposed portion of the film may be cut ofi and removed from` the camera andan empty receiving roll put in the place thereof to enable additio'nal pictures to be taken thereafter;I

I attain this object by the mechanism shown on the accompanying drawing in which:

Fig. 1' is a side view of the camera in cross section;

Fig. 2 is a rear view of the camera, partly in cross section; i

Fig. 3 is a side view of ya portion of the operating mechanism, with the )cover plate removed; Y

Fig. 4 is a view, in cross section, at right angles to Fig. 3;

Fig. 5 is a side view in cross section of the clutch gear;

Fig. 6 is an 'enlarged side view, partly in cross section, showing certain parts of the interior mechanism.

The side walls, 1 and 2, are preferably of wood. Any suitable form of swinging front 3 may be used. The partition 4 and the outer wall 5, together with the removable back 6 are arranged between'the side walls to form a light-proofenclosure for the roll 70 of unexposed film, while the partition 8, front wall 9, removable cap 10, and the various parts of the operating mechanism form a li t-proof enclosure for the receiving roll 1.

The roll of unexposed film is positioned between .plain centers'll-Awhereas the re- Ceiving roll is positioned between a plain center 12 and a clutch center 13. The clutch center is composed of a 'central stem with lateral ribs 14 and a bifurcated sleeve 15 to permit manual operation thereof. A casing 19 is arranged to form a cover for the gear 16, and is provided ,with a) boss 20 to receive the spring 17. A gear 21 of the same size as the gear 16 is arranged just below the same to mesh therewith and isfrictionally held between a pinion 22 and a handle 23 which hasa threaded hub portion adapted to be screwed upon a threaded boss on the pinion 22 so as'to f rictionally hold the gear 21. The pinion 22 meshes with and rotates another pinion 24 on the end of a rubber-covered roller 25 which bears against an idle roller 26 for feeding the film forwards when it is passed between these two rollers.

Just above the idle roller is a guidebar 27 which extends from one side to the other of the camera and contains within it a bar 28 which has a bifurcated end 29 in .which is journaled a disk cutter 30. The outer A steel blade 32curved in cross section,

`end of the bar 28 projects through the open soA is arranged along the guidebar 27 so as to i be engaged by the disk-cutter 3() while the latter is moved along the-guidebar, so as to cut ofi the film. The guidebar is formed sufficiently long at oneend thereof to enable the disk cutter to be .moved entirely out of the has'aA curve outer surface which'is sli htly spaced from the adjacent portion o the partition 8 so as to leave a narrow passage therebetween, through lwhich is lpassed a band of paper 33 from a roll v84 on the outside of the camera. After leaving this narrow passage the pa er passes over a plate 34 hinged to the e ge of the artition 8, and from thence onto the receiving roll 71. Spring fingers 35 are arranged in any convenient way for guidin the cut-ofi' end of the film around the roll 1 to theunde'r side thereof, and into the converging space be-v tween the band of paper'33 and. the surface of the roll 7'1 so as to be taken up by the latter as it is rotated.

ath of the film. The blade 32l CTriangularpiecesofpwood 36 are secured i to the inner side walls of the camera to aidv in guiding the film, and a rectangular metal frame 37 is screwed to the edges of these pieces, as well as to the edge of the blade 32 and thepartition 4 for securing the leather bellowsx. I

vIn order to wind upr the .film from the last exposure, the operator may vuse either the hand wheel 18 or lthe handle 23,"pref-- erably the latter. The feeding roller 25 is y of such a diameter that it will require anA .integral number of revolutions to wind up` the length of one picture. When the ex# posed portion of the film is to be cut off, the knife-30 is drawn across the same and ushed `back in place. The receiving roll 1 is then given several revolutions to cover the film with several layers of papergwhile the feeding roller is held against rotation. The cap 10 is then taken ofi' and lthe roller 71 replaced by an empty one, thepaper`33 beingltorn off from the. former 'roller and v as to take up any slack in the band of paper -light without vadmitting light to the unex-v inserted into the slit of the empty one. The hand wheel 18 is then given a slight turn so 33, and the 'cap 10 is replaced.` The camera is then ready for taking more'pictures.

Claims: 1. .A rollffilm camera 1comprising a clutch for rotating a receiving roll, a roller for feeding the exposed portion of the film to .the receiving roll, means.. for rotating said roller, yielding means tending to rotate the clutch when the feeding roller is rotated, a knife. edge adjacent :the feedingl roller, a guide adjacentV and parallel to the knife edge, a travelling knife carried by the guide, yieldabl guiding fingers for guiding the cut-ofi' end of the .film to the receiving roll, means for guiding a band Vof papervto ythe receiving roll, -means forming a light-proofA cover for the unexposed portion of the film and detachable from the camera so as to permitthe insertion of a roll of film, and means, in addition to the aforesaid means,

for forming a li ht-proof cover for the exthe film and detachable. vfrom the camera s o as to permit the removal.

posed portion o of the exposed portion of the film by dayposed portion of the film.

2. In a"roll-film camera, a feeding roller i. adapted to bear. against 'the film, a knife edge adjacent and parallel tc the roller. a travelling knife, means for guiding the incassa .guiding the cut-off end of the film to .the

' the outside of the camera to lsever only the 'slidable along arranged to 'bear against the film, a edge adjacent and parallel to the roller, gulding means adjacent andparallel to the y knife edge, a barslidable in thel guiding means and carrying a knife on the end thereof, for cutting off the film when the knife is movedalong the knife edge, a disengageable'clutch for rotating a receiving roll, means' for supplying a band lof paperv to the receiving roll, resilient fingers for receiving roll, geared connections between the feeding roller and the clutch for rotating one of said elements when the other is rotated. said geared connections comprising a yielding element. and means for actuating said geared connections.

4. A roll film camera comprising a frame? Work for supporting a film spool aiid are-- Winding spool, means for guiding a. continuous'strip of sensitive film from the'film tating the rewinding spool, means for guiding a'separate band of light-insulating material to the rewinding spool? to be wound thereon together with thefexposed portion the outside ofthe eamera/to-sever only the exposed portion of the film While leaving the band of light-insulating material intact, and means operatively connected with the means' for rotating the rewinding spool for taking up the free end of the film from the film spool. f i i 5. A roll film camera comprising a frame- .Il ,work for supporting a film spool and a rewinding spool .means for guiding a conf4 tinuous strip ofsensitive filmvfrom the film *spoolj to the rewinding spool, means for rotating'the rewinding s ool, means for guldmg a separate band o flight insulating material to the rewinding-spool toghe' wound thereon together with the exposed. portion of the sensitive film, means operable from exposed portion of the film while leaving y'the band of light-insulating material intact,

and yieldable gearing operatively connected with the meansfor rotating the rewinding spool for taking up the freefend ofthe film fromtthe film spool.

6. A roll film camera comprisinga framework for supporting a film spool and a re- Winding s ool, means for guiding -a strip of sensitive 1m from the filin' spool to the re- .windin spool, va bar-extending transversely across t e film adjacentthe rewinding spool, a knife edge on the other side of the film,

a rotatable. cutting disk cooperating with the knife edge to sever the film, and meansJ said transverse bar for mov- 125 ing sa'idcuttlng disk along said knife edge.

' EARL P. CLARK.

knife spool to the rewinding spool, means for ro. y

of the sensitive film, means operablefrom f 

